feat: implement AdminRoute for admin access control and enhance UsersPage with user management features

src/lib/api/services/admin.ts

@@ -0,0 +1,54 @@
+import { apiClient } from '../client'
+import type { User } from '@/types/auth'
+
+export interface Plan {
+  id: number
+  code: string
+  name: string
+  description?: string
+  credits: number
+  max_credits: number
+  created_at: string
+  updated_at: string
+}
+
+export interface UserUpdate {
+  name?: string
+  plan_id?: number
+  credits?: number
+  is_active?: boolean
+}
+
+export interface MessageResponse {
+  message: string
+}
+
+export class AdminService {
+  async listUsers(limit = 100, offset = 0): Promise<User[]> {
+    return apiClient.get<User[]>(`/api/v1/admin/users/`, {
+      params: { limit, offset }
+    })
+  }
+
+  async getUser(userId: number): Promise<User> {
+    return apiClient.get<User>(`/api/v1/admin/users/${userId}`)
+  }
+
+  async updateUser(userId: number, data: UserUpdate): Promise<User> {
+    return apiClient.patch<User>(`/api/v1/admin/users/${userId}`, data)
+  }
+
+  async disableUser(userId: number): Promise<MessageResponse> {
+    return apiClient.post<MessageResponse>(`/api/v1/admin/users/${userId}/disable`)
+  }
+
+  async enableUser(userId: number): Promise<MessageResponse> {
+    return apiClient.post<MessageResponse>(`/api/v1/admin/users/${userId}/enable`)
+  }
+
+  async listPlans(): Promise<Plan[]> {
+    return apiClient.get<Plan[]>(`/api/v1/admin/users/plans/list`)
+  }
+}
+
+export const adminService = new AdminService()